Wavelength Tunable Devices Based on Holographic Polymer Dispersed Liquid Crystals

LIST OF FIGURES......Page 9
BookmarkTitle:......Page 17
LIST OF TABLES......Page 18
ACKNOWLEDGEMENT......Page 19
1.1.1 Liquid Crystal Phases......Page 20
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1.1.2 Anisotropic Properties of Liquid Crystals......Page 24
1.2 The Frank Free Energy and the Continuum Theory......Page 28
1.3 Surface Alignment of Liquid Crystal......Page 30
1.4.1 Director Configuration in Case of Infinite Surface Anchoring......Page 32
1.4.2 Director Configuration in Case of Finite Surface Anchoring......Page 40
2.1 Introduction......Page 43
2.2 Jones Matrix Method......Page 45
2.3  Berreman's 4-by-4 Matrix Method......Page 48
2.4.1 Introduction to Grating......Page 56
2.4.2 Coupled Wave Theory [16]......Page 59
2.4.3. Coupled Wave Theory for Transmission Gratings......Page 61
 2.4.4. Coupled Wave Theory for Reflection Gratings......Page 67
3.1 Introduction to Holography......Page 71
3.2 Introduction to Holographic Polymer Dispersed Liquid Crystals......Page 73
3.3 Transmission Mode HPDLCs......Page 76
3.4 Reflection Mode HPDLC......Page 79
3.5 Variable-Wavelength HPDLC......Page 81
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3.6.1 UV Mixtures......Page 84
 3.6.2 Visible Mixtures......Page 85
3.7. Summary......Page 86
4.2 Introduction to Fabry-Perot Interferometer......Page 87
4.3 Introduction to Liquid Crystal Fabry-Perot (LCFP) Tunable Filter......Page 98
4.4.1. Single LCFP System......Page 103
4.4.2 Twin LCFP System......Page 110
4.4.3. Environment Test of LCFP......Page 112
4.5 Summary and Conclusions......Page 117
 5.2 Background: Introduction to HCPC......Page 118
5.3 Principle of Operation of SCPC......Page 121
5.4.1 First Type (Beam Steering) SCPC......Page 123
5.4.2 Second Type (Focusing) SCPC......Page 126
5.4.3 Astigmatism in Second Type (Focusing) SCPC......Page 127
5.5.1 Single Channel SCPC......Page 132
5.5.2 10-channel SCPC......Page 135
5.6.1 Material Optimization for Big-Area SCPC Working in NIR......Page 137
5.6.2 Fabrication and Characterization of Single Channel SCPC Working in NIR......Page 140
5.6.3.1 Fabrication Process......Page 142
5.6.3.3 Wavelength Dependence......Page 145
5.6.3.4 Angular Dependence......Page 148
5.7 Summary and Conclusions......Page 152
6.2 Introduction to Dye......Page 153
6.4 Introduction to Dye Laser......Page 163
6.5 Introduction to Photonic Band Gap Materials......Page 168
6.6 Introduction to Lasing in Liquid Crystal Materials......Page 169
6.7 Introduction to Dye-Lasing in HPDLC......Page 171
6.8.1 Lasing of single reflective dye-doped HPDLC......Page 173
6.8.2 Lasing of transmissive Dye-doped HPDLC......Page 176
6.8.3.1 Lasing Tuning in Stack of HPDLCs......Page 185
6.8.3.2 Lasing Tuning in Chirped HPDLC......Page 188
6.9 Two Dimensional Dye-Doped HPDLC Lasing......Page 191
6.10 Lasing of Polarization Grating......Page 197
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6.11  Summary and Conclusions......Page 207
Conclusions and Considerations on Future Work......Page 208
Bibliography......Page 210